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The green synthesis of metal oxide nanoparticles (MONPs) using Azadirachta indica (neem) as a biogenic reducing and capping agent is discussed in this review. Neem eliminates the need for harmful chemicals and solvents that are typically used in standard synthesis procedures of MONPs. This review discusses the many ways, such as coprecipitation, hydrothermal, and microemulsion approaches, that neem leaf extract can be used to produce oxide NPs. This review focused on obtaining data from recent advances in synthesis, characterization and applications of biological synthesis techniques. The relative abundance of A. indica (neem) means this can be widely used for creating reductant and stabilizing agents needed for MONPs formation. Using plant biomolecules in MONPs increases their toxicity toward microorganisms, enabling them to resist degradation and prevent ecological pollution. The review explores the size, shape, and crystal structure of neem-based NPs, which have potential uses in areas including water purification, biological imaging, and catalysis. Overall, this review finds that A. indica is a promising substitute for conventional synthetic techniques in the green synthesis of metallic oxide NPs.


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Azadirachta indica-based Green Fabrication of Metal Oxide Nanoparticles: A State-of-the-Art Review

Show Author's information Zille Huma1,§Musfira Arain2,§Muhammad Hammad Parvaiz1Sana Ullah3Khan Gul4Roohul Amin5Waheed Rehman2Faiq Saeed6( )Samia Arain7( )
Department of Chemistry, Riphah International University, Faisalabad 38000, Pakistan
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
Department of chemistry, Bacha Khan University Palosa, Charsadda, Pakistan
Government College Peshawar, University of Peshawar, Pakistan
Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin 300072, China
Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China

§These authors contributed equally to this work.

Abstract

The green synthesis of metal oxide nanoparticles (MONPs) using Azadirachta indica (neem) as a biogenic reducing and capping agent is discussed in this review. Neem eliminates the need for harmful chemicals and solvents that are typically used in standard synthesis procedures of MONPs. This review discusses the many ways, such as coprecipitation, hydrothermal, and microemulsion approaches, that neem leaf extract can be used to produce oxide NPs. This review focused on obtaining data from recent advances in synthesis, characterization and applications of biological synthesis techniques. The relative abundance of A. indica (neem) means this can be widely used for creating reductant and stabilizing agents needed for MONPs formation. Using plant biomolecules in MONPs increases their toxicity toward microorganisms, enabling them to resist degradation and prevent ecological pollution. The review explores the size, shape, and crystal structure of neem-based NPs, which have potential uses in areas including water purification, biological imaging, and catalysis. Overall, this review finds that A. indica is a promising substitute for conventional synthetic techniques in the green synthesis of metallic oxide NPs.

Keywords: imaging, purification, microorganisms, metal oxide nanoparticles (NPs)

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Publication history

Received: 26 December 2023
Revised: 21 January 2024
Accepted: 13 February 2024
Published: 26 March 2024

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© The Author(s) 2024.

Acknowledgements

Acknowledgements

We acknowledge the support from National Natural Science Foundation of China (No. 61975148).

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